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WD 40 under deck....I'm surprised but it works

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25K views 46 replies 27 participants last post by  dishboy  
#1 ·
THis weekend I gave the mowers a bath and then realized I was out of MoDeck. (stuff works just ok...it does make scraping the deck much easier)...so I say what the heck and heavily sprayed the mower decks with WD 40. Well to my surprise yesterday, after 5 machine hours of mowing in dew and long grass, there was very little build up....what a nice surprise...I'll see how it goes today ...just thought I'd pass this on as I didn't think wd40 had a snowballs chance of working, even a little bit, to prevent buildup...
 
#2 ·
I thought it was kind of pricy and didn't work all that well. It didn't leave enough residue.
I now use mineral spirits with some used motor oil dumped into it. I spray it on with a little 2 gallon hand sprayer.
When I started the decks had a lot of rusty scale. Now every time I scrape and oil them they look shinnier. They're easier to scrape too. No more scale at all.
I've never tried Mo-deck or anything like that. All my decks together come up to over 32' of mowing width. So I wanted something cheaper. Now I can treat them all for about $1.

Dave
 
#3 ·
Originally posted by David Haggerty
All my decks together come up to over 32' of mowing width. So I wanted something cheaper. Now I can treat them all for about $1.

Dave
So, you have a 21" and an 11" mower?? Two 16" mowers? I'm lost.
 
#5 ·
I'll try that Dave...where do you locate your mower when you're spraying this slimy muck?? I guess newspapers under it might work?? I cant jack my mower up with the Juingle jack on stones because it wont roll under the mower unless the surface is smooth
 
#10 ·
Originally posted by Meg-Mo
Try the MEG MO blades and you wont have to worry about those jobs of cleaning decks.
Waaaaaaiiit a minute...........how are they going to keep you from having to keep your deck clean? :confused:

Explain to me how will your blades keep wet St. Augustine grass from sticking to the underside of my deck without using any kind of spray....And I'd like a real technical explanation please, not just another post where you say they are great...........
 
#12 ·
what do u guys think about power washing the under side of decks??? i hear that it's not good cause the high pressure water gets into crevices and speeds up rust.

1. can i hear from guys that power wash their mowers and what if any problems have u had???

im gonna try the WD 40 and see if it works.......

2. i somehow need to clean up/remove the rust on the underside of my deck , any suggestions other than sand blasting???
 
#13 ·
Originally posted by Red Dwarf
Waaaaaaiiit a minute...........how are they going to keep you from having to keep your deck clean? :confused:

Explain to me how will your blades keep wet St. Augustine grass from sticking to the underside of my deck without using any kind of spray....And I'd like a real technical explanation please, not just another post where you say they are great...........
I would imagine it has to do with the amount of lift and all the air flow that is created with the Meg Mo blades. Really its not rocket science.
 
#14 ·
i clean my deck with the wax mode, at car washes,,after doing a particularly weed area.the most important thing is not speading weeds to areas that are better kept. the wax seems to work alrite .
but in the rite conditions any deck is gonna clog up. any ive used anyway.
 
#17 ·
I don't know fellas


We don't usualy feel there is any need to scrap the deck. During rain, or after, sure it needs to be done. But regular average mowing? Like once a week if that on the day we change blades.
 
#19 ·
Originally posted by Meg-Mo
Like DLCS says it just one of the side benefices of the MEG MO blades
Then please explain it for us mowing dummies...I've only been at this for 9 years commercially now and I would like to know as well.
 
#20 ·
Originally posted by SUGAR_CUT_MARK
what do u guys think about power washing the under side of decks??? i hear that it's not good cause the high pressure water gets into crevices and speeds up rust.

1. can i hear from guys that power wash their mowers and what if any problems have u had???

im gonna try the WD 40 and see if it works.......

2. i somehow need to clean up/remove the rust on the underside of my deck , any suggestions other than sand blasting???
I built a covered bay on the side of my shop to do all my deck and mower cleaning. I have a steam cleaner out there and have found nothing better to clean mowers with. The water is so hot ( 210 degrees ) it just evaporates in less than a minute. Rust does'nt have time to set up. You just have to watch the spindles, because it is possible to cook the grease out of them. Also, in the winter time it's fun to make a massive smoke ( steam ) screen with it, and really.....who does'nt like a good smoke screen?
 
#21 ·
i used a aerosol can of rust preventer/lube on my deck after giving it a thorough once over with the pressure washer. i had considerably less buildup this past week of mowing, i'm trying WD-40 this week, see how it compares.
 
#22 ·
The idea of spraying a petroleum based product under a mower, then cutting grass with it, just strikes me as 'What's wrong with this picture?'

Why not use a vegetable oil type spray or Pam?

Under deck build up OR not.
This is on a Scag, fixed deck, 36", with mulching kit. Larger decks may react differently. (I said D-E-C-K-S)
Only time I've ever HAD to scrape underside of the deck was when mower was brand new and I used standard factory blades it came with, that was once only.
Then installed doubles, a hi lift and a gator max. Have not had any build up since, NONE. OK, maybe a little in the very corners, but less than a cup worth total. This has been on wet or dry grass, tall or short. My conclusion is that the lift keeps any build up from happening, I believe that is also what happens when using Meg-Mo system which I have tried and will post results in a day or two when testing completed.
 
#23 ·
Originally posted by GLAN

You do that daily?
I'm averaging once a week now. It was more often in the spring. The bluegrass is really sappy then. The sap just drips off of the edge of the decks like green water. The grass is so lush and tender I swear you could put it in a salad and eat it.

The mess of the used oil & mineral spirits is definitely the biggest drawback. I've even considered buying new oil because what I have is used diesel oil.
I like the results though. Every time I clean the decks the shinny spot is a little bigger. And the corners no longer have rust & scale in them. Just some clumps that are easier to dig out.
I don't even have to clean the decks all that well either. If a clump of grass is left stuck somewhere I just saturate it good with the sprayer. It acts like a little oily wick to keep protection in that spot.

So far as getting oil into the enviroment, I use a fraction of the oil that I loose thru the hydraulic and engine oil systems. Plus ALL of the deck oil goes onto the clippings and none of it goes directly onto the grass plant. It isn't hurting the lawns any.

I have a pressure washer. I no longer use it to clean the decks. Now THAT was a mess. They had to hose me off with the garden hose before I could go in the house. And like Mark mentioned I either had to oil them afterwards or they'd rust.

This is just what I use. It may be more of a production than a lot of LCO's would want to deal with. Or maybe your decks just don't build up as bad as mine.
I have some big old mowers I'm trying to nurse every hour out of them that I can. I've seen decks rust thru from neglect. (my neglect) This not only preserves them, it makes cleaning them easier.

Dave
 
#25 ·
I bought a 5 litre bottle of WD-40 and spray it everywhere with a 500ml spray bottle. Alot cheaper than the aerosol cans and you can get a thicker coating IMO. I was told by my dealler to use dilluted degreaser to clean tops and bottoms of decks, thats what they do! Everything gets the grease gun treatment after and more WD-40.